html,body,h1,h2,h3,h4,h5,h6,ul,ol,li,p,span,pre {
    margin: 0;padding: 0;border: 0;
}
html,body {
    background-color: black;
    overflow: auto;
    font-size: 2.7vw;
}
h1,h2,h3,h4,h5,h6 { 
    font-weight: normal;
}
ul,ol,li {
    list-style: none;
}
a {
    text-decoration: none;
}